CN117285292A - Mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material - Google Patents
Mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material Download PDFInfo
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- CN117285292A CN117285292A CN202311581300.9A CN202311581300A CN117285292A CN 117285292 A CN117285292 A CN 117285292A CN 202311581300 A CN202311581300 A CN 202311581300A CN 117285292 A CN117285292 A CN 117285292A
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- fly ash
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- carbide slag
- red mud
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- 239000010881 fly ash Substances 0.000 title claims abstract description 192
- 239000000463 material Substances 0.000 title claims abstract description 177
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 62
- 238000004056 waste incineration Methods 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 54
- 239000002893 slag Substances 0.000 claims description 50
- 239000004576 sand Substances 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 21
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 20
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 18
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 6
- 238000006703 hydration reaction Methods 0.000 abstract description 13
- 239000000047 product Substances 0.000 abstract description 10
- 239000011575 calcium Substances 0.000 abstract description 8
- 229910052791 calcium Inorganic materials 0.000 abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 230000036571 hydration Effects 0.000 abstract description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011148 porous material Substances 0.000 abstract description 6
- 238000002386 leaching Methods 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 2
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 18
- 239000000126 substance Substances 0.000 description 13
- 239000002002 slurry Substances 0.000 description 9
- 239000011780 sodium chloride Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000003483 aging Methods 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 3
- 238000009775 high-speed stirring Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material, which utilizes the red mud-fly ash-carbide slag-fly ash quaternary cementing material to effectively solidify heavy metals in waste incineration fly ash, prevent the heavy metals from leaching to harm the surrounding environment and save the cost; in the quaternary cementing material, the waste incineration fly ash containing se:Sub>A large amount of chloride is doped, so that new hydration products such as F salt, hydrated calcium chloroaluminate and the like are generated by hydration reaction, the waste incineration fly ash is more completely reacted, other three cementing materials are hydrated to generate more reaction products such as C-S-H, C-A-S-H and the like, and the gel such as the hydrated calcium chloroaluminate and the gel such as the gel C-S-H, C-A-S-H and the like jointly fill the pores among particle structures, so that the structure is more compact, se:Sub>A unified whole is formed, the compressive strength of the mortar material is improved, the compressive strength of 7d is more than 10 MPse:Sub>A, and the compressive strength of 28d is more than 12 MPse:Sub>A.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a four-element cementing material mortar material based on red mud, fly ash, carbide slag and fly ash.
Background
Along with the continuous promotion of industrialization, a large amount of municipal waste and industrial production waste are generated. In recent years, garbage incineration gradually becomes a main mode of garbage disposal, and dioxin generated in the incineration process is enriched in garbage incineration fly ash at a low temperature section in the furnace, if harmful substances in the garbage incineration fly ash are not properly treated, serious harm is caused to the environment.
The existing disposal mode of the waste incineration fly ash mainly comprises two modes of solidification stability and resource utilization, and has the defects of low solidification amount, difficult control of product quality and extremely low disposal efficiency, and can not effectively reduce the technical problem of environmental pollution caused by the fly ash. And, carbide slag is an industrial waste material generated in the process of industrial production of polyvinyl chloride, and about 20t of carbide slag slurry is discharged per 1t of PVC product produced according to statistics. In addition, red mud is an industrial solid waste discharged when alumina is extracted in the aluminum production industry, and is called red mud because of high ferric oxide content and similar appearance to red mud, the red mud has strong alkalinity and contains a small amount of heavy metals, and the accumulated red mud can cause serious threat to the surrounding environment, and serious people can pollute underground water and directly harm the ecological environment. Therefore, the method realizes the stabilization, the safety and the recycling treatment of the wastes, has social and economic benefits, and accords with the sustainable development concept.
Disclosure of Invention
The invention aims to provide a four-element cementing material mortar material based on red mud, fly ash, carbide slag and fly ash, which is prepared by doping waste incineration fly ash into a four-element cementing material based on an original red mud, carbide slag and fly ash ternary cementing system, and by utilizing various solid wastes to cooperatively solidify heavy metals in the waste incineration fly ash, the environment is not polluted, and the four-element cementing material has higher compressive strength than the ternary cementing material, and the strength of the four-element cementing material mortar material based on red mud, fly ash, carbide slag and fly ash is obviously improved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is prepared from the following raw materials in parts by weight: red mud-fly ash-carbide slag-fly ash quaternary cementing material and sand;
the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared from the following raw materials in parts by weight: 10.00-40.00 parts of fly ash, 10.00-30.00 parts of red mud, 10.00-30.00 parts of carbide slag, 10.00-30.00 parts of waste incineration fly ash and 20-40 parts of water;
the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.2-0.4.
Preferably, the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 2-4.
Preferably, the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is (2-4): (1-3): (1-3): (2-4).
Preferably, the red mud consists of the following components in parts by weight: 23-27 parts of Fe 2 O 3 26-30 parts of Al 2 O 3 20-24 parts of SiO 2 11-15 parts of Na 2 O, 3-7 parts of TiO 2 2-5 parts of CaO and 0.1-0.4 part of P 2 O 5 0.1 to 0.4 part of SO 3 0.1 to 0.3 part of ZrO 2 0.1 to 0.3 part of V 2 O 5 。
Preferably, the specific surface area of the waste incineration fly ash is 320-360 m 2 And/kg, wherein the middle grain diameter of the waste incineration fly ash is 17-21 mu m.
Preferably, the carbide slag comprises the following components in parts by weightThe composition is as follows: 86-90 parts of CaO and 2-6 parts of SiO 2 2-6 parts of Al 2 O 3 0.3 to 0.8 part of Na 2 O, 0.1-0.4 part of Fe 2 O 3 0.3 to 0.7 part of SO 3 0.08-0.2 parts of MgO.
Preferably, the specific surface area of the carbide slag is 260-300 m 2 And/kg, wherein the median particle diameter of the specific surface area of the carbide slag is 12-15 mu m.
Preferably, the fly ash consists of the following components in parts by weight: 38-42 parts of Al 2 O 3 46-50 parts of SiO 2 2-5 parts of Fe 2 O 3 0.8-2.2 parts of TiO 2 2-5 parts of CaO and 0.1-0.5 part of P 2 O 5 0.2 to 0.6 part of SO 3 0.7-1.2 parts of K 2 O。
Preferably, the sand stone is iron tailing sand, the grain size of the iron tailing sand is 0.1 mm-3.2 mm, the mud content of the iron tailing sand is 2-7%, the fineness modulus of the iron tailing sand is 1.2-3.6, and the stacking area of the iron tailing sand is 1250-1700 kg/m 3 The apparent density of the iron tailing sand is 2350-2750 kg/m 3 。
The invention also provides a preparation method of the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, which comprises the following steps:
(1) Mixing red mud, fly ash, carbide slag, fly ash and water, and then performing first stirring to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material;
(2) Adding sand and stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step (1), and carrying out second stirring to obtain a mixture;
(3) And (3) stirring the mixture obtained in the step (2) at a high speed to obtain the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material.
The invention provides a mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is prepared from the following raw materials in parts by weight: red mud-fly ash-carbide slag-fly ash quaternary cementing material, sand stone and water; the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared from the following raw materials in parts by weight: 10.00-40.00 parts of fly ash, 10.00-30.00 parts of red mud, 10.00-30.00 parts of carbide slag and 10.00-30.00 parts of waste incineration fly ash. The mortar material provided by the invention can effectively solidify heavy metals in the waste incineration fly ash by utilizing the red mud-fly ash-carbide slag-fly ash quaternary cementing material, prevent the heavy metals from leaching to harm the surrounding environment, save the cost and accord with the sustainable development concept; in the red mud-fly ash-carbide slag-fly ash quaternary gelled material, the waste incineration fly ash containing se:Sub>A large amount of chloride is doped to promote the hydration reaction to generate new hydration products such as F salt, hydrated calcium chloroaluminate and the like, so that the waste incineration fly ash is more completely reacted, the other three gelled materials are hydrated to generate more reaction products such as C-S-H, C-A-S-H and the like, and the hydrated calcium chloroaluminate and the gel such as C-S-H, C-A-S-H jointly fill the pores among particle structures, so that the structure is more compact, the phases form se:Sub>A unified whole, the compressive strength of the system is improved, the 7d compressive strength of the mortar material prepared from the mortar material can reach 15.5 MPse:Sub>A, the 28d compressive strength can reach 17.6 MPse:Sub>A, and the mortar material has the characteristics of environmental protection and high strength; the waste incineration fly ash is used as dangerous solid waste, only transportation cost is needed to be considered, and the red mud-fly ash-carbide slag-fly ash quaternary cementing material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared by adding the waste incineration fly ash into a red mud-carbide slag-fly ash ternary system, and is superior to the mortar material of the original ternary cementing system in both strength and economic benefit. The results of the examples show that the 7d compressive strength of the mortar materials 1-3 prepared by the examples 1-3 of the invention reach more than 10MPa, the 28d compressive strength reaches more than 12MPa, and the compressive strength is high.
Drawings
FIG. 1 is a flow chart of a method for preparing a mortar material based on a red mud-fly ash-carbide slag-fly ash quaternary binder of the invention;
FIG. 2 is a microscopic morphology chart of the red mud-fly ash-carbide slag-fly ash quaternary cementing material prepared in example 2 of the present invention, which is 500 times enlarged for 28d age hardening slurry;
FIG. 3 is a microscopic morphology chart of the red mud-fly ash-carbide slag-fly ash quaternary cementing material prepared in the embodiment 2 of the invention at an magnification of 5000 times of 28d age hardening slurry;
FIG. 4 shows XRD patterns of red mud-fly ash-carbide slag-fly ash quaternary gelled materials prepared in example 2 of the invention at different ages;
FIG. 5 is an EDS analysis probe point diagram of the red mud-fly ash-carbide slag-fly ash quaternary cementing material prepared in the embodiment 2 of the invention, wherein spots 1-4 are positions 1-4;
fig. 6 is an EDS diagram of Spot1 of the red mud-fly ash-carbide slag-fly ash quaternary binder prepared in example 2 of the present invention;
FIG. 7 is an EDS diagram of Spot2 of the red mud-fly ash-carbide slag-fly ash quaternary cementing material prepared in example 2 of the present invention;
FIG. 8 is an EDS diagram of Spot3 of the red mud-fly ash-carbide slag-fly ash quaternary cementing material prepared in example 2 of the present invention;
fig. 9 is an EDS diagram of Spot4 of the red mud-fly ash-carbide slag-fly ash quaternary binder prepared in example 2 of the present invention.
Detailed Description
In the present invention, the raw materials used are all conventional commercial products in the art unless otherwise specified.
The invention provides a mortar material based on red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is prepared from the following raw materials in parts by weight: red mud-fly ash-carbide slag-fly ash quaternary cementing material and sand;
the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared from the following raw materials in parts by weight: 10.00-40.00 parts of fly ash, 10.00-30.00 parts of red mud, 10.00-30.00 parts of carbide slag, 10.00-30.00 parts of waste incineration fly ash and 20-40 parts of water;
the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.2-0.4.
In the invention, the red mud-fly ash-carbide slag-fly ash quaternary cementing material is preferably prepared from the following raw materials in parts by weight: 11.00-38.00 parts of fly ash, 11.00-28.00 parts of red mud, 11.00-28.00 parts of carbide slag, 11.00-28.00 parts of waste incineration fly ash and 21-39 parts of water.
In the invention, the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is preferably 2-4, more preferably 2.5-3.5, and even more preferably 3. The invention controls the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material in the above range so as to ensure the compressive strength of the quaternary cementing material; the quality ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is too small to influence the fluidity and the working performance in the forming process of the mortar material, and the compressive strength of the mortar material is reduced due to the too large ratio.
In the present invention, the ratio of the total mass of the water to the red mud, the waste incineration fly ash, the carbide slag and the fly ash is preferably 0.25 to 0.35, and more preferably 0.3. The invention controls the ratio of the mass of water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash in the range, so as to ensure the performance and the mass of the quaternary cementing material; the ratio of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is too low, the red mud, the waste incineration fly ash, the carbide slag and the fly ash are difficult to generate sufficient hydration reaction, harmful substances are not sufficiently solidified, a complete quaternary cementing material system is difficult to form, the ratio of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is too high, crystallization expansion is caused after long-time reaction, and therefore the internal structural system of the mortar material is damaged, the mortar material is easy to crack and delaminate, and the compressive strength of the mortar material is reduced.
In the invention, the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is preferably (2-4): (1-3): (1-3): (2 to 4), more preferably (2.5 to 3.5): (1.5-2.5): (1.5-2.5): (2.5 to 3.5), more preferably 3:2:2:3. the invention controls the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the above range so as to control the strong alkali environment, promote the more full utilization of each phase of substances in the subsequent hydration reaction process, solidify the Cl element contained in the substances to a higher degree, prevent heavy metal leaching, and further ensure the compressive strength of the mortar material.
In the invention, the red mud is preferably composed of the following components in parts by weight: 23-27 parts of Fe 2 O 3 26-30 parts of Al 2 O 3 20-24 parts of SiO 2 11-15 parts of Na 2 O, 3-7 parts of TiO 2 2-5 parts of CaO and 0.1-0.4 part of P 2 O 5 0.1 to 0.4 part of SO 3 0.1 to 0.3 part of ZrO 2 0.1 to 0.3 part of V 2 O 5 More preferably 24 to 26.5 parts of Fe 2 O 3 27-29 parts of Al 2 O 3 21-23 parts of SiO 2 12-14 parts of Na 2 O, 3-6 parts of TiO 2 3-4 parts of CaO and 0.15-0.3 part of P 2 O 5 0.15 to 0.3 part of SO 3 0.14 to 0.22 part of ZrO 2 V of 0.12 to 0.22 part 2 O 5 Further preferably 25.70 parts of Fe 2 O 3 28.40 parts of Al 2 O 3 22.30 parts of SiO 2 13.90 parts of Na 2 O, 5.57 parts of TiO 2 3.12 parts of CaO, 0.20 part of P 2 O 5 0.20 part of SO 3 0.18 part of ZrO 2 V0.16 part 2 O 5 。
In the invention, the specific surface area of the red mud is preferably 680-700 m 2 Preferably 685-699 m 2 Preferably 696.1m 2 /kg. In the present invention, the medium particle diameter of the red mud is preferably 19 to 25. Mu.m, more preferably 20 to 23. Mu.m, still more preferably 21.41. Mu.m. The invention controls the specific surface area and the medium grain diameter of the red mud in the range, provides particles with larger grain diameter and smaller grain diameter for the quaternary cementing material, has small specific surface area, can reduce water consumption, and can improve the uniformity of a mortar material sample, prevent segregation and further ensure the overall strength of the mortar material. In the invention, the waste incineration fly ash is preferably composed of the following components in parts by weight: 54-57 parts of CaO, 14-20 parts of NaCl,3-9 parts of SiO 2 1-6 parts of Al 2 O 3 1-6 parts of MgO and 6-11 parts of Na 2 O, 2-7 parts of SO 3 0.2 to 0.9 part of Fe 2 O 3 1-7 parts of K 2 O, 0.0.8-0.3 part of TiO 2 More preferably 53 to 56 parts of CaO, 15 to 19 parts of NaCl, 4 to 7 parts of SiO 2 2-5 parts of Al 2 O 3 2-5 parts of MgO and 7-10 parts of Na 2 O, 3-6 parts of SO 3 0.3 to 0.7 part of Fe 2 O 3 2-6 parts of K 2 O, 0.1-0.25 part of TiO 2 Further preferably 54.40 parts of CaO, 17.25 parts of NaCl and 6.25 parts of SiO 2 3.28 parts of Al 2 O 3 3.65 parts MgO, 8.52 parts Na 2 O, 4.65 parts of SO 3 0.57 part of Fe 2 O 3 4.42 parts of K 2 O, 0.18 part of TiO 2 。
In the invention, the specific surface area of the waste incineration fly ash is preferably 320-360 m 2 Preferably 330 to 355 m/kg 2 Kg, more preferably 349.9m 2 /kg. In the present invention, the median particle diameter of the waste incineration fly ash is 17 to 21. Mu.m, more preferably 15 to 20. Mu.m, still more preferably 19.67. Mu.m. The invention controls the specific surface area and the medium grain diameter of the waste incineration fly ash in the range, provides smaller and medium grain diameter grain components for the quaternary cementing material, and ensures that the component grains of the quaternary cementing material are mutually complemented and better fill the pores, thereby providing powerful guarantee for the development of the integral compressive strength of the mortar material.
In the invention, the carbide slag is preferably composed of the following components in parts by weight: 86-90 parts of CaO and 2-6 parts of SiO 2 2-6 parts of Al 2 O 3 0.3 to 0.8 part of Na 2 O, 0.1-0.4 part of Fe 2 O 3 0.3 to 0.7 part of SO 3 0.08 to 0.2 part of MgO, more preferably 87 to 89 parts of CaO, 3 to 5 parts of SiO 2 3-5 parts of Al 2 O 3 0.4 to 0.7 part of Na 2 O, 0.2-0.3 part of Fe 2 O 3 0.4-0.6 part of SO 3 0.1 to 0.18 part of MgO, more preferably 88.60 parts of CaO and 4.22 parts of SiO 2 4.85 parts of Al 2 O 3 0.58 part of Na 2 O, 0.22 part of Fe 2 O 3 0.51 part of SO 3 0.14 part of MgO.
In the invention, the specific surface area of the carbide slag is preferably 260-300 m 2 Preferably 270 to 295m per kg 2 Per kg, more preferably 287.6m 2 /kg. In the present invention, the median particle diameter of the carbide slag is 12 to 15. Mu.m, more preferably 12.5 to 14.5. Mu.m, still more preferably 13.84. Mu.m. According to the invention, the specific surface area and the medium particle size of carbide slag are controlled in the above range, smaller particles are provided for the quaternary cementing material, the matching degree of each component particle in the quaternary cementing material is improved, the more free water among the particles is, the more the matching degree is, the sufficient free water can improve the fluidity among the particles in the forming process of the quaternary cementing material, the porosity is reduced, the compressive strength of the quaternary cementing material is improved, and the leaching of harmful substances is reduced, so that the compressive strength of the mortar material is improved.
In the invention, the fly ash is preferably composed of the following components in parts by weight: 38-42 parts of Al 2 O 3 46-50 parts of SiO 2 2-5 parts of Fe 2 O 3 0.8-2.2 parts of TiO 2 2-5 parts of CaO and 0.1-0.5 part of P 2 O 5 0.2 to 0.6 part of SO 3 0.7-1.2 parts of K 2 O, more preferably 39 to 41 parts of Al 2 O 3 47-49.5 parts of SiO 2 2.5 to 4.5 parts of Fe 2 O 3 1.2 to 2.0 parts of TiO 2 3-4 parts of CaO, 0.15-0.4 part of P 2 O 5 0.3 to 0.55 part of SO 3 0.8-1.1 parts of K 2 O, more preferably 40.60 parts of Al 2 O 3 48.90 parts of SiO 2 3.21 parts of Fe 2 O 3 1.69 parts of TiO 2 3.20 parts of CaO, 0.29 part of P 2 O 5 0.43 part of SO 3 0.91 part of K 2 O。
In the invention, the specific surface area of the fly ash is preferably 300-380 m 2 Preferably 320 to 370m per kg 2 Kg, more preferably 355m 2 /kg. At the position ofIn the present invention, the median particle diameter of the fly ash is 12 to 17.5. Mu.m, more preferably 13.5 to 16.5. Mu.m, still more preferably 15.15. Mu.m. The invention controls the specific surface area and the medium grain diameter of the fly ash in the range, provides smaller grain diameter components for the quaternary cementing material, ensures that the structure is more compact, and forms a unified whole among phases, thereby improving the compressive strength and durability of the mortar material, improving the fluidity among grains in the forming process of the mortar material and reducing shrinkage, thereby reducing the cracking risk.
In the present invention, the sand is preferably iron tailings. In the invention, the particle size of the iron tailings is preferably 0.1 mm-3.2 mm, more preferably 0.12 mm-3 mm, and even more preferably 0.16 mm-2.36 mm. In the present invention, the iron tailings preferably have a mud content of 2 to 7%, more preferably 3 to 6%, still more preferably 4.5%, a fineness modulus of 1.2 to 3.6, more preferably 1.6 to 3, still more preferably 2.1, and a stacking area of 1250 to 1700kg/m 3 More preferably 1300 to 1650kg/m 3 Further preferably 1540kg/m 3 In the invention, the apparent density of the iron tailing sand is preferably 2350-2750 kg/m 3 More preferably 2400 to 2680kg/m 3 Further preferably 2530kg/m 3 . According to the invention, various parameters of the iron tailing sand are controlled in the above range, so that the prepared mortar material is controlled to shrink in the drying and hardening processes, and simultaneously, tiny cracks in the mortar material are filled, so that the cracks are prevented from expanding, the mortar material is firmer, and the strength of the mortar material is improved.
The invention also provides a preparation method of the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, which comprises the following steps:
(1) Mixing red mud, fly ash, carbide slag, fly ash and water, and then performing first stirring to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material;
(2) Adding sand and stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step (1), and carrying out second stirring to obtain a mixture;
(3) And (3) stirring the mixture obtained in the step (2) at a high speed to obtain the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material.
The preparation method of the cobalt metal organic framework material provided by the invention is simple to operate, mild in reaction condition and suitable for large-scale production.
In the present invention, the time of the first stirring is preferably 10 to 50s, more preferably 20 to 40s. The invention controls the time of the first stirring in the range so as to promote the complete mixing reaction of the components and obtain the red mud-fly ash-carbide slag-fly ash quaternary cementing material with better comprehensive performance. The rate of the first stirring is not particularly limited in the present invention, and may be any rate known in the art.
In the present invention, the time of the second stirring is preferably 75 to 110s, more preferably 80 to 100s. The rate of the second stirring is not particularly limited in the present invention, and may be any rate known in the art. The present invention controls the time of the first agitation within the above range to promote complete mixing of the components.
In the present invention, the time for the high-speed stirring is preferably 45 to 80 seconds, more preferably 50 to 70 seconds. In the invention, the high-speed stirring speed is preferably 100-150 r/min, more preferably 120r/min. The invention controls the time and the rotating speed of high-speed stirring in the range so as to promote the materials to be fully fused, and improve the uniformity and the quality of the materials.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a flow chart of a preparation method of a mortar material based on a red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is provided by the invention, specifically: mixing red mud, fly ash, carbide slag, fly ash and water, and then performing first stirring to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material; adding sand stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material, and carrying out second stirring to obtain a mixture; and (3) stirring the mixture at a high speed to obtain the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material.
The chemical compositions included in the red mud, carbide slag, fly ash and waste incineration fly ash used in examples 1 to 3 are shown in tables 1 to 4, and the specific surface area of the red mud is 680 to 700m 2 Per kg, the median particle diameter is preferably 21.41. Mu.m; the specific surface area of the carbide slag is 287.6m 2 Kg, median particle diameter 13.84 μm; the specific surface area of the fly ash is 355m 2 Kg, medium particle size 15.15 μm; the specific surface area of the waste incineration fly ash is 349.9m 2 Per kg, median particle diameter 19.67. Mu.m.
TABLE 1 statistics of chemical composition of Red mud
；
TABLE 2 statistics of chemical composition of carbide slag
；
TABLE 3 statistics of chemical composition of fly ash
；
TABLE 4 statistics of chemical composition of fly ash
。
Example 1
(1) Adding 0.9kg of fly ash, 0.9kg of carbide slag, 0.6kg of fly ash, 0.6kg of red mud and 0.9kg of water into a cement mortar stirrer for first stirring for 30s at 25r/min to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material; the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.3; the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 2:2:3:3, a step of;
(2) Adding 9kg of sand stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step (1) in a stirrer, and carrying out second stirring for 90s at 25r/min to obtain a mixture; the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 3;
(3) After scraping off the rubber sand on the blade of the stirrer in the step (2), stirring the mixture in the step (2) at a high speed of 120r/min for 60s to obtain the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is called as the mortar material 1 for short.
Example 2
(1) Adding 0.75kg of fly ash, 0.5kg of carbide slag, 0.5kg of fly ash, 0.75kg of red mud and 0.75kg of water into a cement mortar stirrer for first stirring for 30s at 25r/min to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material; the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.3; the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 3:2:2:3, a step of;
(2) Adding 7.5kg of sand stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step (1) in a stirrer, and carrying out second stirring for 90s at 25r/min to obtain a mixture; the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 3;
(3) After scraping off the rubber sand on the blade of the stirrer in the step (2), stirring the mixture in the step (2) at a high speed of 120r/min for 60s to obtain a mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is called as the mortar material 2 for short.
Example 3
(1) Adding 0.5kg of fly ash, 0.75kg of carbide slag, 0.5kg of fly ash, 0.75kg of red mud and 0.75kg of water into a cement mortar stirrer for first stirring for 30s at 25r/min to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material; the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.3; the mass ratio of the red mud, the fly ash, the carbide slag and the fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 3:2:3:2;
(2) Adding 7.5kg of sand stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step (1) in a stirrer, and carrying out second stirring for 90s at 25r/min to obtain a mixture; the mass ratio of the ore sand to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 3;
(3) After scraping off the rubber sand on the blade of the stirrer in the step (2), stirring the mixture in the step (2) at a high speed of 120r/min for 60s to obtain a mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, which is called as mortar material 3 for short.
Mortar materials 1, 2 and 3 prepared in examples 1 to 3 were tested for compressive strength of 7d and 28d, respectively, and the test results are shown in table 5.
Table 5 Strength test statistics for mortar materials 1-3
；
As can be seen from Table 5, the mortar materials 1 to 3 prepared in examples 1 to 3 all have a 7d compression resistance of 10MPa or more and a 28d compression strength of 12MPa or more, and have high compression strength, high mechanical comprehensive properties and small performance difference.
The microscopic morphology of the four-element cementing material of red mud-fly ash-carbide slag-fly ash prepared in the embodiment 2 is observed by utilizing a scanning electron microscope after the four-element cementing material is vacuumized and sprayed with gold, so that a microscopic morphology chart of the four-element cementing material of red mud-fly ash-carbide slag-fly ash prepared in the embodiment 2, which is 500 times larger than the 28d age hardening slurry of the four-element cementing material, is shown in the figure 2, and a microscopic morphology chart of the four-element cementing material of red mud-fly ash-carbide slag-fly ash, which is 5000 times larger than the 28d age hardening slurry of the four-element cementing material of the embodiment 2, is shown in the figure 3, and the interface in the four-element cementing material of red mud-fly ash-carbide slag-fly ash prepared in the embodiment 2 is compact, the gel-like material can effectively fill the interface pores, and has obvious cracks, but crystals with higher crystallinity in the system are mutually overlapped and adhered to form a unified whole, the microstructure of the system is more compact, and no obvious holes and defects are shown in the figures 2 and 3; the microstructure of the system comprises a quadrilateral square flaky crystal structure and a plurality of fine hexagonal square flaky crystal structures; as can be seen from fig. 3, the 28 d-age SEM result shows that amorphous and crystalline hydration products in the quaternary binder system overlap each other to form a hardened slurry skeleton, meanwhile, the inter-particle pore filling in the system is relatively perfect, and early-stage crystal substances in the system are consumed to generate hydration products, so that sources are provided for the strength of the hardened slurry of the quaternary binder system.
Phase analysis is carried out on the quaternary cementing materials 7d and 28d prepared in the embodiment 2 by adopting an X-ray diffractometer, so that XRD patterns of different ages of the red mud-fly ash-carbide slag-fly ash quaternary cementing materials prepared in the embodiment 2 are shown in figure 4.
The detection parameters of the X-ray diffractometer are as follows: cu target, tube voltage 200kV, tube current 40mA. Diffraction angleIs set to 10 DEG to 80 DEG, and the scanning rate is 1 DEG/min.
As can be seen from FIG. 4, the quaternary cementing material 7d prepared in example 2 has higher diffraction peak intensity of NaCl, and the diffraction peak of NaCl is obviously weakened when the curing age reaches 28d, but 3CaO.Al 2 O 3 •CaCl 2 •10H 2 The diffraction peak of O is obviously enhanced, and the quadrangular square sheet crystal structure and the more fine hexagonal square sheet crystal structure contained in the microstructure of the system shown in figure 3 are NaCl and 3CaO.Al respectively 2 O 3 •CaCl 2 •10H 2 O; from FIG. 4, caCO is observed 3 Diffraction peak, caCO 3 One of the main sources is CaCO existing in the original raw material carbide slag and the waste incineration fly ash 3 Substance, anotherThe source is Ca (OH) in the reaction system 2 CO in the environment 2 Reacting to generate CaCO 3 The method comprises the steps of carrying out a first treatment on the surface of the Fe is observed in FIG. 4 2 O 3 Diffraction peak, fe 2 O 3 Mainly provided by red mud, fe 2 O 3 Hardly participates in the reaction in the system, and only plays an inert filling role for the whole gelling system; in fig. 4, a Mullite diffraction peak is observed, the main source of Mullite being fly ash, since at gel system 28d, a portion of the fly ash is still present in the system and does not participate in the hydration reaction.
EDS analysis is carried out on the red mud-fly ash-carbide slag-fly ash quaternary cementing material hardened slurry prepared in the embodiment 2 by adopting an EDS dotting test mode, microscopic substance composition of a mortar material sample maintained for 28d is detected, the position of a detection point of the EDS analysis is shown as Spot 1-4 in fig. 5, and EDS spectrograms of Spot 1-4 based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material hardened slurry prepared in the embodiment 2 are shown as fig. 6-9.
As can be seen from FIG. 6, the main elements at position 1 or Spot1 in FIG. 5 are Fe and O, and small amounts of Ca, na, cl and the like are contained, which is the same as that of FIG. 4 2 O 3 Diffraction peaks correspond; as shown in fig. 7, i.e. fig. 5, the main elements at position 2 are Na and Cl, which corresponds to the observation of a diffraction peak of NaCl in fig. 4, and the determination is made here as a NaCl crystal which does not participate in the reaction; as shown in FIG. 8, namely, FIG. 5, position 3, the main elements are Cse:Sub>A, si, al, O, cl and the like, and the main hydration products are hydrated calcium chloroaluminate, C-A-S-H gel and the like according to the judgment of FIG. 4; as shown in FIG. 9, which shows the main elements Cse:Sub>A, si, al, O and Cl, etc. at position 4 of FIG. 5, the amorphous phase is compared with that of FIG. 2, and the results are consistent with that shown by SEM in FIG. 3, and it is judged that the hydration products are also hydrated calcium chloroaluminate and C-A-S-H gel.
In conclusion, the mortar material provided by the invention is based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material, and a large amount of Cl elements are provided for a system by adding the waste incineration fly ash, so that the quaternary cementing material contains a large amount of NaCl crystals to participate in the hydration reaction process, and the hydration product 3CaO.Al is promoted 2 O 3 •CaCl 2 •10H 2 O is generatedThe resultant 3CaO.Al 2 O 3 •CaCl 2 •10H 2 The O and the C-S-H, C-A-S-H gel in the quaternary cementing material jointly fill the pores among the particle structures, so that the structure is more compact, and each phase forms a unified whole, thereby improving the compressive strength of the mortar material.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared from the following raw materials in parts by weight: red mud-fly ash-carbide slag-fly ash quaternary cementing material and sand;
the red mud-fly ash-carbide slag-fly ash quaternary cementing material is prepared from the following raw materials in parts by weight: 10.00-40.00 parts of fly ash, 10.00-30.00 parts of red mud, 10.00-30.00 parts of carbide slag, 10.00-30.00 parts of waste incineration fly ash and 20-40 parts of water;
the ratio of the mass of the water to the total mass of the red mud, the waste incineration fly ash, the carbide slag and the fly ash is 0.2-0.4.
2. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the mass ratio of the sand stone to the red mud-fly ash-carbide slag-fly ash quaternary cementing material is 2-4.
3. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the mass ratio of red mud, waste incineration fly ash, carbide slag and fly ash in the red mud-fly ash-carbide slag-fly ash quaternary cementing material is (2-4): (1-3): (1-3): (2-4).
4. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the red mud consists of the following components in parts by weight: 23-27 parts of Fe 2 O 3 26-30 parts of Al 2 O 3 20-24 parts of SiO 2 11-15 parts of Na 2 O, 3-7 parts of TiO 2 2-5 parts of CaO and 0.1-0.4 part of P 2 O 5 0.1 to 0.4 part of SO 3 0.1 to 0.3 part of ZrO 2 0.1 to 0.3 part of V 2 O 5 。
5. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1 or 2, wherein the specific surface area of the waste incineration fly ash is 320-360 m 2 And/kg, wherein the middle grain diameter of the waste incineration fly ash is 17-21 mu m.
6. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the carbide slag consists of the following components in parts by weight: 86-90 parts of CaO and 2-6 parts of SiO 2 2-6 parts of Al 2 O 3 0.3 to 0.8 part of Na 2 O, 0.1-0.4 part of Fe 2 O 3 0.3 to 0.7 part of SO 3 0.08-0.2 parts of MgO.
7. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1 or 6, wherein the specific surface area of the carbide slag is 260-300 m 2 And/kg, wherein the median particle diameter of the specific surface area of the carbide slag is 12-15 mu m.
8. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the fly ash consists of the following components in parts by weight: 38-42 parts of Al 2 O 3 46-50 parts of SiO 2 2-5 parts of Fe 2 O 3 0.8-2.2 parts of TiO 2 2-5 parts of CaO and 0.1-0.5 part of P 2 O 5 0.2 to 0.6 part of SO 3 0.7-1.2 parts of K 2 O。
9. The mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to claim 1, wherein the sand stone is iron tailings, the particle size of the iron tailings is 0.1 mm-3.2 mm, the mud content of the iron tailings is 2-7%, the fineness modulus of the iron tailings is 1.2-3.6, and the stacking area of the iron tailings is 1250-1700 kg/m 3 The apparent density of the iron tailing sand is 2350-2750 kg/m 3 。
10. A method for preparing the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material according to any one of claims 1 to 9, comprising the following steps:
s1, mixing red mud, fly ash, carbide slag, fly ash and water, and then performing first stirring to obtain a red mud-fly ash-carbide slag-fly ash quaternary cementing material;
s2, adding sand and stone into the red mud-fly ash-carbide slag-fly ash quaternary cementing material obtained in the step S1, and carrying out second stirring to obtain a mixture;
and S3, stirring the mixture obtained in the step S2 at a high speed to obtain the mortar material based on the red mud-fly ash-carbide slag-fly ash quaternary cementing material.
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